SOUND VOLUME CONTROL DEVICE, SOUND VOLUME CONTROL METHOD, AND SOUND VOLUME CONTROL SYSTEM

To adaptively adjust a sound volume of voice output from a speaker regardless of a distance between a noise sensor and a noise source in a wide place to improve audibility of the voice for a listener.SOLUTION: A sound volume control device comprises: a noise acquisition unit for acquiring a noise va...

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Bibliographic Details
Main Author TOKUDA TADAMICHI
Format Patent
LanguageEnglish
Japanese
Published 11.11.2022
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Summary:To adaptively adjust a sound volume of voice output from a speaker regardless of a distance between a noise sensor and a noise source in a wide place to improve audibility of the voice for a listener.SOLUTION: A sound volume control device comprises: a noise acquisition unit for acquiring a noise value of noise observed by each of a plurality of noise sensors; a noise source estimation unit for estimating a position of a noise source in an observed area on the basis of acquired noise values of noise observed by the plurality of respective noise sensors; a noise estimation unit for estimating a noise value at the noise source's position on the basis of noise values attenuating depending on distances between the estimated position of the noise source and the plurality of respective noise sensors; and a control unit for calculating an amplification factor of voice from a sound source on the basis of a sound volume of the voice from the sound source and the estimated noise value at the noise source's position.SELECTED DRAWING: Figure 1 【課題】広い場所において騒音センサと騒音源との間の距離に拘わらず、スピーカから出力される音声の音量を適応的に調整し、音声の聴取者に対する聞き取り易さを向上する。【解決手段】音量制御装置は、複数の騒音センサのそれぞれにより観測された騒音の騒音値を取得する騒音取得部と、取得された複数の騒音センサのそれぞれにより観測された騒音の騒音値に基づいて、観測エリアにおける騒音源の位置を推定する騒音源推定部と、推定された騒音源の位置と複数の騒音センサのそれぞれとの間の距離に応じて減衰する騒音値に基づいて、騒音源の位置における騒音値を推定する騒音推定部と、音源からの音声の音量と推定された騒音源の位置における騒音値とに基づいて、音源からの音声の増幅率を算出する制御部と、を備える。【選択図】図1
Bibliography:Application Number: JP20210077916